The passive voice is less usual than the active voice. The active voice is the "normal" voice. But sometimes we need the passive voice. In this lesson we look at how to construct the passive voice, when to use it and how to conjugate it.
Construction of the Passive Voice
The structure of the passive voice is very simple:
subject + auxiliary verb (be) + main verb (past participle)
The main verb is always in its past participle form.
Look at these examples:
Use of the Passive Voice
We use the passive when:
* we want to make the active object more important
* we do not know the active subject
Note that we always use by to introduce the passive object (Fish are eaten by cats).
Conjugation for the Passive Voice
We can form the passive in any tense. In fact, conjugation of verbs in the passive tense is rather easy, as the main verb is always in past participle form and the auxiliary verb is always be. To form the required tense, we conjugate the auxiliary verb. So, for example:
* present simple: It is made
* present continuous: It is being made
* present perfect: It has been made
Here are some examples with most of the possible tenses:
What are Modal Verbs?
Modal verbs are special verbs which behave very differently from normal verbs. Here are some important differences:
1. Modal verbs do not take "-s" in the third person.
* He can speak Chinese.
* She should be here by 9:00.
2. You use "not" to make modal verbs negative, even in Simple Present and Simple Past.
* He should not be late.
* They might not come to the party.
3. Many modal verbs cannot be used in the past tenses or the future tenses.
* He will can go with us. Not Correct
* She musted study very hard. Not Correct
Common Modal Verbs
Must | Ought to
For the purposes of this tutorial, we have included some expressions...